public class Person{
    public String name;
    public int age;

    public  Person(){
        this("测试",109);
        System.out.println("sss");
    }



    public Person(String name,int age){
        this.name = name;
        this.age = age;
        System.out.println("sssss");
    }



    public void eat(){

        System.out.println(name+"吃饭！");
    }

}